The Schaefer Stand Up Swivel Blocks are excellent for fixed position halyard,
sheet or control line fairleads. Block swivels 360º, tilts in all directions
and is supported by a heavy gauge S.S. sprint to prevent deck contact.
Large diameter base helps
distribute loads to a larger surface area than other smaller designs.
The new M-Series Schaefer Stand Up Block features Aluminum sheaves with Torlon™ rollers and Delrin™ ball bearings
for superior strength and low-friction. Machined center allows the hub to be used as a bracket.