MXP-HL001-037 PULLEY - MEDIUM (SN30) SELF-OPEN BLOCK (SOB) W/ THUMB LOCK

PULLEY - MEDIUM (SN30) 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.