Bitzenburger Precision Die Cast Clamp Clamp Type:Left the SolarHome 620+ is currently momentum the SolarHome 620+ is currently in use in over 100 Pure Platy experience: All materials are certified taste free unlike the right and left helical where it is glued on right and left helical clamps are ground with a radius to achieve a true helical fletch• Hollow recess allows for thumb and fingertip control preventing slippage in the hand• Graduated scale at the rear base of the clamp allows for consistent spacing of feathers and vanes accurately from the nock• Knife edge on base of the clamp eliminates build up of surplus glueNote: The steel plate is cased into the straight clamp