Product Specifications: - Material: Cast Steel - 4 Sizes: 1.6x9", 2.4x12", 3.2x16", 4x16" Why choose our product? --Extended Flattened Tip Have a machine milled point and blade flighting that starts immediately above it. As soon as they hit the ground, they start digging. --Only Tack Welded - easy to break in hard ground Have an extended bead weld at the top and bottom which will not break easily. --Hex Shaped End - Excellent Grip Have a machined Hex Shaped end giving excellent balanced grip in drill chucks. --NO MORE BACK STRAIN It eliminates constantly bending over while drilling, and this rapid planter will drill through loose, even rocky materials, so you can plant bulbs and bedding plants anywhere you want.