Jim, here is the current list again.
Post-June 2010
On June 17, 2010, the Israel cabinet agreed to ease the restrictions on items permitted into the Gaza strip.
List no. 1: Items Subject to Specific Permission
1. Arms and Munitions: forbidden transfer under all circumstances across Israel's frontiers without specific permits - as defined in the Control of Exports Security Order (Arms and Munitions) 5768-2008, and in the Control of Exports Security Order (Missile Equipment) 5768-2008.
2. Dual Use goods and items: liable to be used, side by side with their civilian purposes, for the development, production, installation or enhancement of military capabilities and terrorist capacities. This list comprises:
Items listed under the Wassenaar Arrangement: As specified in the updated (2008) "Wassenaar Arrangement on Export Controls for Arms and Dual Use Goods and Technologies - List of Dual Use Goods and Technologies and Munitions List."
Items whose entry into the PA Areas is controlled based on Israeli legislation: i.e. materials and equipment liable to be used for terror attacks and technology that could be used by terrorists - as defined in the Control of Exports Security Order (Controlled Dual Use Equipment Transferred to the PA Areas) 5768-2008 and in Orders of the OC Central Command.
These lists include, in detail, a range of chemicals used in the production of explosives (including certain fertilizers); specific types of metal profiles; ball bearings; lathes and their parts; composite materials; hunting knives and machetes; optical equipment, such as lasers and night vision goggles; certain navigation aides; diving equipment; parachutes, gliders and other nonmotorized airborne vehicles; flares and fireworks; avionics and flight control equipment; missile related computer technologies; rock drills and equipment drawing water from excavated sites. Items not necessarily included in the lists above but whose entry into Gaza is controlled, as detailed below:
i. Items and chemicals which could be used in the production of high trajectory weapons (rockets and mortars) by Hamas and other terror groups in Gaza - Fertilizers or other mixtures - specifically containing KCl at more than 5%; Epoxy and Vinyl Ester resins; Hardeners for Epoxy Resins containing Amides or Amines; Accelerators for Vinyl Esters; HTPB; Water purification solutions at concentrations higher than 11%.
ii. Items used as raw materials for improving protection for terror activists - Fibers or woven fabrics containing Carbon or Glass variants.
iii. Vessels.

List No. 2: Construction Items and Materials to be Allowed Entry into Gaza only for PA-authorized Projects Implemented by the International Community
Israel will only permit their entry into Gaza to facilitate construction projects in Gaza which have been authorized by the PA and implemented and monitored by the international community. The often cited reason is that such materials could be used by Hamas for military purposes (building bunkers, fortifying positions and digging tunnels)
This list includes:
Portland cement and lime (in bulk, bags or barrels)
Natural and Quarry aggregates and all varieties of gravel
Ready concrete
Precast concrete elements and products
Steel elements and/or construction products
Iron for foundations and columns, at any diameter (including wielded steel nets)
Steel cables of any width
Forms for construction elements (plastics or galvanized iron)
Industrialized forms for casting concrete
Plastic or composite beams more than 4 mm thick
Thermal isolation materials and products
Blocs (at any width) - Concrete; Silicate; Ytong or its equivalent; or gypsum
Materials and products for sealing structures
Asphalt and its components (Bitumen, emulsion) in aggregate or packaged
Steel elements or framing products for construction
Cast concrete elements and products for drainage over 1 m in diameter
Precast units and sea-borne containers
Vehicles, excluding private cars and including 4X4 vehicles and other categories of motor vehicles liable to be used in terror activities
Lumber beams and boards more than 2 cm thick, (liable to be used in "offensive" tunneling aimed at penetrating Israeli territory), unless incorporated in finished products
Specific procedures, on a case by case basis, will be established so as to permit the transfer of such lumber for other purposes in Gaza.