The 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls in a captive grooved race. We aim to ship Pre Order Harken Parts within a week of purchase.  Sheave Ø (mm)16 mm Length (mm)57 mm Weight (g)43 g Maximum line Ø (mm)5 mm Maximum working load (kg)318 kg Breaking load (kg)544 kg