Harken Double Block - 16mm Spinlock 91200-fits masts with circumferences of

91200-fits masts with circumferences of 23" and larger with corresponding mast collars of up to 37" (584 to 940 mm)

This re-arming kit is also suitable for other manufacturer's lifejackets which use the UML inflator system

double needle seam with back-stitch reinforcement

Self-Priming Plunger Valve

Harken Double Block - 16mm Spinlock 91200-fits masts with circumferences ofThe 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. The 404 uses an O ring to keep the line in the sheave during intermittent loading.