MXP-HL001-036 PULLEY - Large (SN40) Self-Open Block (SOB) w/ Thumb Lock

PULLEY - Large (SN40) Self-Open Block (SOB) w/ Thumb Lock - These are

marine grade pulleys with selectable self-opening action. These pulleys utilize

a swivel connection and an opening front plate. Pulleys are used to reduce

friction while pulling, hoisting and change of direction maneuvering.