Marine Boat Yacht Sailboat Dinghy 40mm 1.57 Inch Aluminum Organizer 3 Sheaves Big Boat Block Master ALC-0403F Master Hercules deck organizers are ideal for cruising boats.The sideplates are made of saturated black hardcoat anodized Aluminum for maximum protection and durability.Sheaves are replaceable with optional purchase for maintenance.Organizers come in different configurations from 2 sheaves to 6 sheaves. Specification: Brand: Master Part Number: ALC-0403F Sheave Ø (mm) 40mm Sheave Ø (in) 1.57in Length (mm) 176mm Length (in) 6.92in Weight (g) 162 g Weight (oz) 5.7oz Maximum line Ø (mm) 12 mm Maximum line Ø (in) 1/2 in Maximum working load (kg) 1000kg Maximum working load (lb) 2200 lb Breaking load (kg) 2000 kg Breaking load (lb) 4400 lb •Do not use Master products to human suspension! Destination custom duty/tax are not included in the listing price; it is the customer's responsibility to pay for custom duty if any.