Infinity Tools 3/4" x 21/32" 黃銅模板導套 附鎖緊螺母

I was worried about finding a replacement, but this brass guide is exactly the right size for the large finger joints. It slid right into my jig and the lock nut tightened down perfectly.

The lock nut threads are clean and grip perfectly, no wobble at all when I tightened it down. This replacement guide brought my old jig back to life for precise box joints.

The brass guide slid right into my jig without any wobble, which is a relief since my old one was starting to wear down. The lock nut tightened firmly, and my first box joint test came out perfectly snug.