Features: Make of aluminum and bearing, enduring, stable, and perfect for your pool/billiard/snooker shafts/cue checking.Designed to check the straightness of butt/shafts (Roll the shafts/butt alone and see if there is any wobbles).Light weight and compacts in size, easy to carry and use.Good accessories for pool cue repair maintenance and care.Great gift for friend, family, lover, or people who love billiards.Specifications: Materials: Aluminum and BearingSize: about 7x3.5x2.5cm/2.76x1.38x0.98inchPackage Includes: 2Pcs Billiard Straightness Checkernote: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.