Kimber America Magazine Extended Base Pad, For Kimber 1911 Magazines (Will Not Work with KimPro Magazines), Matte Finish, Black, Set of 3 4100300 This set of 3 black extended magazine base pads can be used with most 2-screw compatible 1911 magazines (not for use with KimPro Tac-Mags)" ensuring positive magazine seating on 1911 pistols with an extended magazine well. Includes attachment screws.