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the 20 and 30mm blocks include a central rivet for reduced weight and convenient tie-off in a cascade system
C-Series Triple-Pole Flat Rocker Circuit Breaker
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Allen 20mm Dynamic Block with Swivel Head Boat RS21 the 20 and 30mm blocksThe A2020 is our favored low friction, rapid rolling, compact pulley with a swivel head. Its lightweight yet sturdy design makes it perfect for use in dinghies, windsurfing, kitesurfing, and other activities involving smaller sized lines. The Dynamic line of blocks is the optimal choice for applications that require continuous movement of the sheave. The built in swivel pin allows for rotation of the block once attached, making it suitable for