The Carbo Ratchamatic® is a load-sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase

Clean & comfortable

repairs to polyethylene and ABS canoes and kayaks

your Pad-FrD®

Wide waist belt with hook-and-loop adjustment for added comfort and secure fit

Harken 16mm Flip-flop Block 437 SEALANTS The Carbo Ratchamatic® is aThe 16 mm is Harkens 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 and has a 250 lb (113 kg) maximum working load. Sheave (mm) 16 mm Sheave (in) 5 8 in Length (mm) 34 mm Length (in) 1 5 16 in Weight (g) 21 g Weight (oz) . 75 oz Maximum line (mm) 5 mm Maximum line (in) 7 32 in Fasteners (mm) 4 RH mm Fasteners (in) #8 RH in