Type - With Fixed Pin , A=45MM B=12MM , C=6., 5MM D=26MM , E =6MM F = X Riley Rope Pulley Block 51mm x 19mm Delrin Sheave in Stainless Steel body (RM015A) | Boat Loft Pulley System Stainless Steel Pulley Block With Nylon Sheave & Removable Pin 25mm Wheel Hoist Fixed Pull Rope 27147393 Marine Dinghy Pulley Fixed Pin Nylon Pulley Wheel Block 25MM | SecureFix Direct They can be used on dinghies, sailing boats, and small yachts. Stainless Steel 25mm Pulley Block with Nylon Sheave - Fixed Pin - AISI 316. Suits 6mm rope. We offer a variety of shipping options dependent on weight, postcode and urgency – prices are calculated automatically at checkout. As a guide, for standard UK postcodes we offer Specifications: Product Code: SFSSBNC Product Weight: 0., 03kgFixed Pin Pulley Block with Nylon sheave Type - Fixed Pin Suits Rope DIA - 6MM A = 45MM B = 12MM C = 6., 5MM D = 26MM E = 6MM F = X Pulley Blocks are a great multi use item that can be used in various industries for a huge variety of tasks.