The Denman ProEdge's unique 'cutting ledge' is the key to fast and accurate scissor-over-comb and clipper-over-comb cutting. The ledge helps to accurately position the scissor/clipper for a smoother, steadier cut and helps prevent the scissor/clipper from slipping. The ProEdge also helps to improve the posture of the stylist/barber and is known to reduce fatigue. Manufactured in the UK by Denman.