Stark 6 piece Telescopic Gauge Caliper Set features a double action rigid handle with self centering for quick checking of holes, slots and the ends of both contacts are heat treated, satin chrome finished stainless steel and precision ground to a radius to allow proper clearance on the smallest hole the gauge will enter recesses up to 6" deep. The constant spring tension gives uniform contact pressure

Features:

• Gage expands in a hole to be measured (locks in place and then removed to determine final hole size using a micrometer or calipers)
• Spring loaded with locking knurled knob
• Stainless Steel Construction
• Rigid handle and double action design (self-centering) for quick checking of inside measurements
• Contact points are hardened tool steel and precision ground in the end measuring radius
• Get exact sizes of holes, slots, bores, or recesses
• Range: 5/16" - 6" (8mm to 150mm)

Specification:

• Color: Silver
• Material: Stainless Steel
• Range: 5/16" - 6" inch (8mm to 150mm) 
  5/16 - 1/2" range x 4.20" Overall 
  1/2 - 3/4" range x 4.40" Overall 
  3/4 - 1-1/4" Range x 4.40" Overall 
  1-1/4 - 2-1/8" Range x 5.85" Overall 
  2-1/8 - 3-1/2" Range x 5.85" Overall 
  3-1/2 - 6" Range x 5.85" Overall
• Pouch Included: Yes

Package Includes:

• 6PCS Telescoping Gage Set
• Pouch