The Clearly Outdoors Slip Lock Bobber with Stops and Tool Combo Pack. Includes one Bobber, 24 stops and the tool to apply the stops to your line. Combo packs are available in Bobber size Mini, Small, Medium and Large. Works on 2lb-12lb monofiliment line. The Smart Stop Micro is a hard plastic bobber stop that snaps onto your line using the included tool. It is designed to replace and eliminate both the tie on knot and bead as well as the need to thread your line through your stop. Simply set your line into one of the slots of the Smart Stop Holder, give the stop a pinch with the included tool and a twist, and it's on - ready to go.