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. Shifting between ratchet and light-air modes is seamless.

The spring on the HTE (high-threshold engage) version of the 57 mm Carbo Ratchamatic blocks was made stiffer to delay the point where the ratchet engages, allowing the block to run free more of the time. The ratchet function engages at higher loads to allow the old kite sheet to run free for crisper gybes. 1.5x grip: breeze–on/puffs; 15:1 holding power.
 
Specifications
MFG #:2165.HTE
Type57 mm Ratchamatic HTE Block - Swivel - 2 x Grip
Sheave 57 mm (2-1/4")
Length 4-1/16"
Weight 3.7 oz
Shackle Pin 3/16"
Max Line (10 mm) 3/8"
SWL 500 lb
BL 2000 lb
Grip 2 x10mm (3/8") Max. Line
Warning: This item may be known to the State of California to cause cancer, birth defects, or other reproductive harm.