Harken Airblock 16mm Single
The Harken air block offers a very high load in an extremely lightweight block. Excellent for control lines. The block itself is only 1-1/8″ long. The 5/8″ sheave will accept line as large as 7/32″. 250 lb. SWL; 1200 lb. breaking strength. Harken #404. Hobie Cat® uses #H404 for this block.
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 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.