FEATURES:-Savage Flat Back Long Action-Machined From: Solid 7075 T6 Aircraft Grade Aluminum-Finish: Matte Black -Mounting Hardware: Socket Head TorxA(R) Screws & Wrench provided-Center Spread: 3.805"-Overall Length of Mount: 7.064"PRODUCT SPECIFICATIONS:Dimension 1.00 X 3.45 X 8.30Height 1.0000Width 3.4500Length 8.3000STYLE PICATINNYFINISH BLACK MATTEMATERIAL ALUM ALLOYTYPE OF RINGS NEEDED MIL-STD 1913 PICATINNYRINGS INCLUDED NOTHER FEATURES: MADE IN USA, THIS SAVAGE BASE WILL WORK WITH ANY LONG ACTION FLAT BACK SAVAGE WITH AN EJECTION PORT