Mate two shafts with zero backlashSmooth bore protects shafts from damageSuperior torque capacity over set-screw-type couplingsAvailable with straight-through or stepped boresOffered in High Strength, Low Profile and Heavy Duty stylesClamp-Type Couplings are available More... in straight-through or stepped bores. They are precision machined, non-marring, easy to adjust, with high clamping power.Stocked in:SteelStainless SteelAluminumOffered in three styles:High Strength: Clamp screw does not protrude beyond the outside diameter (OD)Low Profile: Clamp screw protrudes beyond the ODHeavy Duty: Uses larger clamp screw and has larger OD for 2X holding power Less