This is the Mori 4 Slim Spectra Slip Tip Pencil Point 9/32 - 6mm Thread Features: The Ultimate MORI SLIP TIP for Spearguns. Hardened Stainless Slip Tip with Spectra Cord for Ultimate Strength. 9/32" sliptip accepts 6mm threads 9/32" Diameter, 6mm Thread, Pencil Point Tip Each SLIP TIP is individually precision machined by Mori to ensure a proper fit from adapter to tip, eliminating possibilities of wobble. Wobble in slip tips can potentially cause a shaft to shoot inaccurately."