Size you need is the width between watch case lugs, not the physical length of old spring bars. Straight spring bars fit most watches.
eBay
6825 Spring Bar Piler Standard Spring Bar Removing Tool Watches Spring Bar Bracelet Pliers for Rolex
Aliexpress UK
The pins supplied will fit these, but note the actual pins are 2mm wider than the strap as they will be under compression when fitted and held in position. To help cut down on paper waste, we don’t send printed invoices.
eBay
Rofessional Spring Bar Remove tool Stainless Steel 7825 V Type Rlx Watch Spring Bar Tweezers for
Aliexpress UK
Whether you're a seasoned watchmaker or a DIY enthusiast, this kit provides everything required to disassemble, repair, and maintain watches with precision and ease. 1 x Case Opener. 18 x Case Opener Pins.
eBay
High Quality Watch Spring Bar Curved Plier Watchband Link Bar Bend Spring Bar Plier Tool
Aliexpress UK
Featuring our top of the line Fat Bar Spring bar, 2.5mm thick divers spring bar made for divers watches. These are extra thick and designed for divers watches with drilled lugs. Because the bar end pins are longer than normal, it requires extra deep lug holes that are only found in watch cases with drilled lugs.
eBay
20pcs 1.5mm 1.8mm Thickness Spring Bars Quick Release Watch Band Spring Bar Metal Spring Link Pins
Aliexpress UK
Spring Bar Tool Available if Needed. I may be small, but I care about each order. Standard Industry End Pip Size (0.7mm). Standard Industry Thickness (1.5mm). Double Flange (Easiest Type to Fit).
eBay
Professional Spring Bar Tool Kit Stainless Steel Watch Band Strap Remover Pliers for
Aliexpress UK
Or bracelet where it attaches to the watch. 4 x Double Flanged Watch Spring Bars (Select Size). compressed size because these are flanged spring bars and each end will slightly protrude each side of the middle tube.
eBay
2.5mm Spring Bar Link Pins 24MM Fat Spring Bars Fit Panerai Watch Strap parts Repair Tool Watchmaker
Aliexpress UK
Locks by turning a screw, you can lock the pliers in the specific size you need for your repair. To spring bar pins and help install watch bracelets and bands to a new (or maybe old) watch case. 1 x Removing Tool.
eBay
16pcs Replace Watch Band Spring Bar Set Repair WristWatch Strap Spring Pine Needle Bar Filed Pin
Aliexpress UK
1 x Case Opener. 18 x Case Opener Pins. 2 x Watch Back Pry Opener. 1 x Watch Band Link Remover. 108 x Watch Strap Spring Pins (8-25mm/0.31-0.98in). Features: Easy to Use, Durable, Watch Repair Kit. Complete watch repair accessories, easy to disassemble and repair.
eBay
360pcs/set Strainless Steel Spring Bars 8mm-25mm Watchband Metal Spring Bars Strap Belt Repair Tools
Aliexpress UK