This is a nice "semi-stubby" stainless steel guitar slide, perfect for standard guitar or cigar box guitar. The slide is 1.97" (51mm) in length, with an inside diameter of .827" (21mm) and an outside diameter of .984" (25mm). The wall thickness is 0.157" (4mm). This size slide is great for general guitar playin gas well as cigar box guitars. We include a piece of self-adhesive faux moleskin with each slide to help you size it to your finger. Also be sure to see our other slides in different sizes and materials!