What size (diameter) is the drill bit?

The drill bit included in the Kreg Jig 320 is 3/8".

Do the screws to use to make pocket holes need to be a certain type? (I'm new but want to try). Does a jig use only a certain type of screw?

Yes the screws are Silver Zinc-Plated Round Washer Interior Pocket Hole Screws. If you by the Kreg 320 kit they come in the kit; if not they are available at most hardware outlets. Beware that the length of the screw is determined by the thickness of wood you are using. I used 1-1/4 inch pocket screws which came with the Kreg 320 kit for 3/4" thick oak. It was my first experience with pocket hole joints and I'm impressed; the joints are strong and tight. The only thing necessary are good square cuts on the wood used.

What is the difference between the 320 and the R3?

Both the Kreg 320 and Kreg R3 will make the same 3/8" pocket-holes. The Kreg 320 is the newest version of our jigs and will an updated clamp pad and easy set drill bit.

hello . can i use this jig with metric (mm) wood ιn thikness? usually i work with 18mm and 25mm.

18mm plywood corresponds to a nominal 3/4 inch plywood, which is just a tiny bit thinner than 3/4 inch. This kit comes with a thickness guage, which will help to ensure that you set the stop for correct pocket hole depth. Same for 25mm, corresponding to1 inch thickness.

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Kreg Pocket-Hole Jig 320

Product ID: 252985726

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📏Adjusts for 1/2" to 1 1/2" materials

🔧Lifetime drill-guide durability

🛠️Includes clamp adapter & anti-slip base

Description

🛠️ Nail every joint like a pro—wherever your project takes you!

PORTABLE POWERHOUSE - Lightweight 635g design with included carrying case for on-the-go projects
EFFORTLESS SETUP USE - Material-thickness stops simplify alignment for 1/2", 3/4", and 1 1/2" boards
BUILT TO LAST A LIFETIME - Durable glass-filled nylon and hardened steel construction with lifetime drill-guide warranty
VERSATILE INDOOR OUTDOOR - Perfect for professional repairs, DIY builds, and everything in between
PRECISION POCKET HOLE MASTERY - Variable spacing with twist-apart drill guides for flawless joints every time

The KregPocket-Hole Jig 320 is a precision-engineered, portable jig designed for creating strong pocket-hole joints in materials from 1/2" to 1 1/2" thick. Featuring an anti-slip base, clamp adapter, and adjustable drill guides with material-thickness stops, it ensures secure, accurate positioning for both indoor and outdoor projects. Crafted from durable glass-filled nylon and hardened steel, it includes a lifetime drill-guide warranty and comes complete with a carrying case and all essential accessories for professional-grade woodworking on the go.

Specifications

Manufacturer	Kreg
Part number	KPHJ320
Item Weight	635 g
Product Dimensions	21.29 x 15.24 x 5.08 cm; 635 g
Item model number	KPHJ320
Size	Hole Jig 320
Color	blue
Style	Jig
Material	Glass-filled nylon, Hardened steel
Item Package Quantity	1
Measurement System	Imperial
Plug Profile	Plate Mount
Specific uses	Amateur, Inside, Outside, Professional
Included components	(1) 6" Square-Drive Bit, (1) Carrying Case, (1) Drill Guide Spacer, (1) Easy-Set Drill Bit and Stop Collar, (1) Material Thickness Gauge/Hex Wrench, (2) Drill Guides with Material Thickness Stops, (40) Sample Screws, Owner’s Manual
Batteries Included?	No
Batteries Required?	No

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