Series 40 All-Purpose Double Block

All-purpose, plain bearing block designed for strength and durability.

Series 40 All-Purpose Double Block. Ronstan's 40mm plain bearing blocks are strong and compact. "Smart" features include swiveling universal head for correct load and sheet alignment. For dinghies and keelboats up to 26'. 1 9/16" (40mm) sheave is made from UV-stabilized acetal and accepts a line size up to 10mm. Cheek is made from stainless steel and fiber-reinforced textured Zytel.

Key Features

• Strong and compact with plain bearing
• Swiveling universal head for correct load and sheet alignment
• Accepts a line size up to 10mm
• Cheek made from stainless steel and fiber-reinforced textured Zytel