10 X 25mm Stainless Steel Pulley Block for Kayak Canoe with Fixed Pin Quantity: 10 Pieces. Type - Fixed pin . Unable to remove. Made of stainless steel 316 and nylon sheave. This pulley block is the ideal water sports accessory suitable for not only sailing but for Kayaking Canoeing and other water sports. It is suited for rope diameter up to 6mm.