Black Keel/Self centering roller 

Length 197mm, Flange 67mm, Diameter 40mm, bore 21mm

20mm shaft required - sold sepratley 

• Durable construction - made from hi-impact HDPE Polyethylene

• Non-abrasive

• Allows your boat roll across the trailer without damage

• Better grip and less friction while rolling

• Non abrasive 

Non abrasive