Draper Mitre Box

Amazon

Beech wood Mitre Box Two 45° guides One 90° guides Guides on both edges, Weight: 1.4550509292 pounds, Manufacturer: Draper

ManoMano

Beechwood with two 45° and one 90° guides on both edges Sold loose This is a Draper product.

Electrical World

Beechwood with two 45° and one 90° guides on both edges. Sold loose.