Protech Bulb Planter 24" Catalog Hand Tools Trowels and Bulb Planters Protech Bulb Planter 24" Manufacturer : Protech Tool Supply Inc Description 24 inches drill bulb planter, drills holes 2-3/4" diameter up to 8 inches deep, fits any 3/8" & 1/2" electric or cordless drill. Rates Please contact us for current pricing and availability.