Marble's Tapered 5-40 Thread Reamer for Installing Stake-On Tapered Middle Shotgun Bead

The Marble's Tapered Tool Steel Reamer is designed to install Stake-On Tapered Middle Shotgun Beads. Features Tool steel material Designed to facilitate installation of Marble's middle shotgun beads Drill hole with a #45 drill bit, then use the Reamer to ream the hole until about 1/3 of the sight shank fits easily into the hole Carefully tap the sight into the hole until the bead is flush with the shotgun's rib.