The Features of Our Chuck:

Chuck weighs 2.43 pounds, and diameter is 3.25"

Reversible jaws on chuck will secure blanks up to 2. 5" square x 5" long

The chuck is pre threaded to 1" x 8 tpi to match your spindle.

Standard the jaws to drill from 1/4" to 1. 5". Reverse the jaws to drill from 1. 5" to 2. 5"

Includes 2 tightening levers to tighten and loosen the jaws.

Specifications:

Material: steel

Item Weight:2.43 pounds

Package Dimensions: 4.53 x3.35 x 3.54 inches

Package Content:

2 x Drilling Jaws

2 x tightening levers

1 x PSI Large Dedicated Pen Drilling Lathe Chuck

Instructions：

Drill a perfectly centered hole in your pen blank directly on your lathe. Thread chuck onto your lathe's headstock spindle.

Mount a drill bit in a drill chuck in your lathe's tailstock. Advance drill bit into blank while lathe is spinning.