This collar has the following specifications:

Bore size:  3/4 in

OD:  1-1/2 in

Width:  1/2 in

Recessed screw: Yes

Material: Steel

Finish: Black Oxide

Clamp screw: Hex Socket cap screw, steel, 10-32

This item is used - in like NEW condition - with 90 day Warranty

Actual pictures of item.

Price $3.00 each (3 available)