Hot Lee Valley Rampa SKD330 1/4-20 Inserts

Available in 15mm and 18mm lengths, these inserts have 1/4-20 internal threads. Triple start threads mean these inserts stay aligned when driven and provide a faster feed rate.

Typical pre-drill is 10mm to 10.5mm (about 13/32″). Insert collar is 12mm, giving an overlap of about 1mm around the drilled hole for a good seal and clean appearance.

Zinc-plated steel. Driven with a 6mm hex driver. Priced per insert.

Made in Germany.