Single Split Shaft Couplings are designed for applications that demand a torque capacity that exceeds the abilities of set screw shaft couplings. One-piece split couplings provide significant clamping power in an efficient manner that leaves the shaft undamaged. Ideal for holding the ends of two shafts together, single split couplings can be re-bored for special applications. The clamping power of the split shaft coupling provides a method of holding the shafts without damage to the shaft. Relief cuts are provided on all of these one piece couplings. Our Single Split Shaft Couplings are machined from high quality bar steel, with standard keyseats and hollow head set screws, available with bore sizes ranging from 1/4" to 2" with and without keyways, denoted by "KW". Black Oxide surface finish produces a fine glossy finish while increasing holding power and resisting corrosion.