Necygoo Woodwork Drill Bits 4PCS Wood Square Hole Mortising Chisel Drill Bits 1/4" 5/16" 3/8" 1/2" or 6.4mm 8mm 9.5mm 12.7mm Only for 3/4" 19mm Mortising Machines Drill Press

The bits looked great. Unfortunately you have to use them on a drill press. The description said hand held drill would work.

I do like the way these work and great price thanks!

Used a 5/16 and worked great

Well worth the money I put it to use right away and still using it today I would recommend it to anybody

Sweet does nice job

It a good product

The quality of the product is ok

Good quality.

Very good quality but something you need to know. You need the drill press attachment to use them. Watch video on youtube before buying on how to use

Couldn't use them. Didn't have the proper holder to install to my drill press, sent back for refund

Bonne fabrication, chaque foret à son propre case en plastique pour le protéger

Pour faire comme des anciennes fenêtres, ca fait très solide

Product itself could not be used without the adapter which is not mentioned in advertisement. I made my own custom adapter and used these drills several times and was very pleased with the results.