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Takes the guess work out of drilling! Simply slip the collar over drill bit; measure desired depth; then tighten set screw. Will drill to uniform depth every time. Steel collars will not slip like plastic stops. Slotted screws tighten into flute. Rust-Proof plated finish. 7pc. set with one collar to fit these drill sizes: 1/8, 3/16, 1/4, 5/16, 3/8, 7/16, 1/2.
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🇺🇸 Ship from USA · On Agora since 2026
$12.95