HARKEN 16 mm Classic Double Block - Becket, 407 Length_8" Long Captive ball bearings let you

Captive ball bearings let you roll the cars on and off the track without using a ball loader

are adjustable for many applications and weather conditions

a lightweight soft-attach

Synchro blocks combine geometry

automatically engages the ratchet when the load increases

HARKEN 16 mm Classic Double Block - Becket, 407 Length_8" Long Captive ball bearings let youHarken 16mm Double Block with Becket is a tiny block, with a 5 8" sheave size. 16mm Blocks have a lightweight design and a unique patented bearing system that uses stainless steel balls in a captive, grooved race. Very high working loads in an extremely lightweight block, with the best strength to weight ratios around. Use with small synthetic control lines found on high tech dinghies.