A pocket hole jig tool, comprising: a base including a work-piece side support surface and a work-piece end support surface; a drill guide support slidably mounted to said base and adapted for movement toward and away from said work-piece side support surface of said base; and at least one drill guide bushing (222, 224) movably mounted on a support arm of the pocket hole jig tool and a drill guide locking mechanism selectively engageable to fixably mount said at least one guide bushing relative to said drill guide support; wherein said at least one drill guide bushing is laterally movable relative to the support arm, and further comprising a guide bushing locking mechanism for selectively securing said at least one drill guide bushing against lateral movement along said support arm; characterised in that said guide bushing locking mechanism includes: a cam surface disposed on a rotatable handle mounted to said support arm; and a cam follower slidably mounted on said support arm and attached to said at least one drill guide bushing; wherein said cam surface is movable from a disengaged to an engaged position engaging the cam follower to cause the cam follower to lockingly engage the support arm, and wherein said cam follower includes a plurality of locking fingers received in an inner surface of said rotatable handle, said cam follower being retained on said support arm by a washer fastened to said support arm and having at least one radially extending finger received between two of said plurality of locking fingers of said cam follower. a base including a work-piece side support surface and a work-piece end support surface; a drill guide support slidably mounted to said base and adapted for movement toward and away from said work-piece side support surface of said base; and at least one drill guide bushing (222, 224) movably mounted on a support arm of the pocket hole jig tool and a drill guide locking mechanism selectively engageable to fixably mount said at least one guide bushing relative to said drill guide support; wherein said at least one drill guide bushing is laterally movable relative to the support arm, and further comprising a guide bushing locking mechanism for selectively securing said at least one drill guide bushing against lateral movement along said support arm; characterised in that said guide bushing locking mechanism includes: a cam surface disposed on a rotatable handle mounted to said support arm; and a cam follower slidably mounted on said support arm and attached to said at least one drill guide bushing; wherein said cam surface is movable from a disengaged to an engaged position engaging the cam follower to cause the cam follower to lockingly engage the support arm, and wherein said cam follower includes a plurality of locking fingers received in an inner surface of said rotatable handle, said cam follower being retained on said support arm by a washer fastened to said support arm and having at least one radially extending finger received between two of said plurality of locking fingers of said cam follower. a cam surface disposed on a rotatable handle mounted to said support arm; and a cam follower slidably mounted on said support arm and attached to said at least one drill guide bushing; wherein said cam surface is movable from a disengaged to an engaged position engaging the cam follower to cause the cam follower to lockingly engage the support arm, and wherein said cam follower includes a plurality of locking fingers received in an inner surface of said rotatable handle, said cam follower being retained on said support arm by a washer fastened to said support arm and having at least one radially extending finger received between two of said plurality of locking fingers of said cam follower.