This item is a custom-made product. Carbon Fiber Billiard Pool Cue Extension with Bumper/Adapter for Predator Pool Cues. Instructions: Remove your Predator cue's existing bumper. Install the new bumper, supplied with the extension, using a standard ¼” Allen wrench (not included). Twist on the extension. COMPATIBLE WITH ALL PREDATOR, POISON, AND MOLINARI CUES MADE SINCE 2012, INCLUDING: o Sneaky Pete SP4, SP6, and SP8 Series o 8K and 9K Series Cues o BK3 and BK-Rush Break Cues o Blak 2nd, 3rd, and 4th Generation Series Cues o Ikon 2nd, 3rd, and 4th Generation Series Cues o Throne 1st and 2nd Generation Series Cues o P3 Series Cues o Sport II Series Cues o Limited and Special Editions (2012 and newer) o Predator CRM and Molinari by Predator Carom Cues Product Specifications: Extension material: Carbon Fiber. Bumper material: Aluminum, Rubber. Joint type between extension and bumper: Bullet. Net weight (with 2 bumpers on both sides of the extension): 2.25” extension: 3.5 oz (100 gr), 4.25” extension: 4.4 oz (125 gr), 6” extension: 4.8 oz (136 gr), 8.3” extension: 5.1 oz (145 gr). Packaging: Plastic bag