Stanley-Drywall-Circle-Cutter-Stanley-STHT1-05878-p-The-Stanley-STHT1-05-878-Drywall-circle-cutter-is-ideal-for-cutting-perfect-holes-in-drywall-up-to-16-inches-400mm-in-diameter-LI-The-cutter-is-precision-calibrated-for-accuracy-&-has-easy-to-read-standard-markings-The-pin-adjusts-up-&-down-&-easily-slides-to-adjust-p-Stanley-STHT1-05878-Drywall-Circle-Cutter