Harken 16mm Classic Pivot Cheek Block, 432 Blocks / Leads_Twin-Sheet & Lead Blocks allows full articulation of stand-up

allows full articulation of stand-up Ronstan Series 40 Orbit Blocks

The hollow-bearing at the center of a single sheave serves as a becket to further reduce weight while adding versatility

so you spend less time fiddling with a sticky locking lever and more time sailing

and versatile block with a 5/8" diameter sheave and a very high breaking load

Series 50 blocks are typically used on boats up to 33' for main and spinnaker sheets

Harken 16mm Classic Pivot Cheek Block, 432 Blocks / Leads_Twin-Sheet & Lead Blocks allows full articulation of stand-upThis tiny and unique block pivots on one #8 screw, and has a 5 8" sheave. 16m 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. The 16 mm is Harkens smallest block. It is perfect for small synthetic control lines found on high tech dinghies.