HINGED SPIRAL NAIL STOP COLLAR
PRODUCT No.: WC-40902
Available in the size range 4 ½ ” to 20”, this device can be set in both upset and non-upset casing to provide maximum clearance during rotation. It has a groove in the middle into which a spiral nail can be driven for improved grip on the casing.
The broader band firmly grips the collar into position around the casing.