The pinnacle of Easton Carbon Arrows – Ultra-Micro for more velocity at impact & deepest penetration. - High-strength carbon fiber construction - Straightness: ± .003” - Pre-installed Deep Six Nocks - Deep Six thread G HIT steel inserts 4MM ultra-micro (G) diameter The world's deadliest, most advanced hunting arrow Deep Six™ the most modern broadhead connection High-strength Carbon Core with 7075 alloy metal jacket Maximize kinetic energy, accuracy and penetration Multi-layer wrapped carbon fibers Smooth matte black finish Straightness: ± .002" Weight tolerance: ± 2 grains Pre-installed Deep Six™ nock Deep Six™ steel G HIT insert included Compatible with Easton 4mm Half-Out Titanium Inserts for shooting standard 8-32 broadheads (sold separately) 460 (9.0 gpi), 400 (9.8 gpi), 330 (11.0 gpi), 280 (12.0 gpi)