The 0.5RH "handle" gives you a way to handle those small - and easily dropped - 0.5" SMRs. A magnet secures the SMR to the end of the handle, and the 4" rubberized grip gives you something to hold on to. Note: this tool is designed to increase your dexterity and "drop" safety factor when moving and placing 0.5" SMRs - but it's not a foolproof guarantee! We always recommend care when handling SMRs.