Power and Sailboat Hardware
Ronstan midget blocks they have a 1/2" diameter stainless steel sheave which will handle either 5/32 rope or 3/32 wire cable. overall length is 1-3/8" the eye diameter 5/16" Great for flag halyards etc.
Ronstan Foot Block Rf64151S
Ronstan S20 Double Block
Ronstan S20 Double Block Becket
Ronstan S20 Exit Block - Cover Plate