Caliburn XL 19/64" Concrete Lag

GRK Caliburn XL 19/64" Concrete Screws are a great option for attaching metal posts to concrete patios and steps. Caliburn XL Screws are designed to grab onto concrete when installed properly and will generate a large amount of resistance needed to install metal posts. Caliburn XL screws are available in three lengths: 5", 3-1/2", and 2-3/4"

 Screws are sold in 4-count and 25-count quantities.

Most posts require 4 attachment locations, except fascia bracket posts, which typically require 6 per post.

Pre-drill holes with a 1/4" masonry bit and install with a Torx T-40 bit.

25/pk qty. GRK Caliburn XL comes with Masonry and Torx bits.

4/pk qty. Anchors do not include bits.

Caliburn XL Technical Drawing

Caliburn XL Brochure