AMS, 209.95, Heavy Duty GVP Kit w/ Dedicated Tips, Flighted Augers & DeWalt 2" SDS Max Hammer DrillThe heavy-duty gas vapor probe kits have all of the components included in the regular GVP kits, but with the added benefit of flighted augers which allow you to penetrate rocky and hard soil conditions. The kit comes with enough flighted extensions to pre-bore a hole to a depth of 9 feet! The heavy duty GVP kits also come with a larger 2-1/2" concrete bit to allow clearance for the 2" diameter flighted augers - should you need to sample beneath concrete. The lead flighted auger bit comes with a hard surfaced tip for regular soil conditions and a carbide tip for heavily compacted soil. Pre-drill your boreholes with the flighted augers prior to insertion of your GVP extensions and sampling tips to increase the lifespan of your stainless steel sampling points. Pre-drilling with flighted augers also allows access to sampling points in horizontal and vertical angles.Includes:DeWalt D25763K- 2' SDS Max Combination Hammer DrillTen GVP dedicated tips with umbrellaRetract-A-Tip, 2 1/2' wild bore bit5/8' tip drive endFour 3' GVP 5/8' extensions5/8' x 3' heavy-duty extendable tile probe baseThree 5/8' x 3' heavy-duty tile probe extensionExternal drive adapter 3/4' IDSDS-Max drill adapterSlide hammerSlide hammer adapter 3/4' ODHand pump3/16' ID x 1/4' OD x 250' fluoropolymer tubingRemoval jack AMS deluxe carrying caseAMS GVP manualGVP instruction DVD video2' carbide drill bit2' x 36' flighted lead auger with hard surfaced tipTwo 2' x 36' flighted extensionsSDS-Max drill adapter.