Cleco 10000010 RB 156 Microstop Cage, Tapped Mounting Base w/ Nylon Nose Piece Product Image May Not Reflect Actual Model. The Cleco 10000010 RB 156 Microstop Cage, Tapped Mounting Base w/ Nylon Nose Piece is a cemented, hardened and ground chrome-nickel steel spindle mounted on a self lubrificating bronze body and a thrust bearing. Centring-cone of the cutter (120°) for perfect concentricity. Microstop depth adjustment (1 scale division = .001”). The Cleco 10000010 RB 156 Microstop Cage, Tapped Mounting Base w/ Nylon Nose Piece’s depth setting is held securely in place by locknut with seal. This patented feature allows an easy loosening of the locknut without damage to the drill cage.