Worth had actually developed their TI51 titanium bat in 1988 but kept it under wraps for five years because they knew how much of an impact it would have on the game. The Worth Ti51 is a 0.051 thin 15-3-3-3 seamless tube, and was the first titanium bat to have an aluminum knob welded to the handle.
Apparently due to popular demand there was a second run (Titanium 2) and a third run (Stinger) but I have not yet had the opportunity to get my hands on either of these, though I have had a chance to play with and test an original Worth Ti51. The item "Rare Used Worth Titanium Ti51 34/27 Slowpitch Bat" is in sale since Wednesday, March 10, 2021.This item is in the category "Sporting Goods\Team Sports\Baseball & Softball\Bats\Softball-Slowpitch". The seller is "dandtsoftballandbaseballbats" and is located in United States. This item can be shipped to United States, Canada.