We stock the torsion springs and cable sets that fit 1980s and 90s steel-door construction, since that's the dominant stock in Mitchellville, plus the heavier-wound springs sized for insulated panels common under the region's cold-climate building code. Rollers, hinges, and bottom brackets for standard two-car residential doors are on the truck by default.
What we don't carry stocked: parts for openers from before the mid-1980s, and anything proprietary to a specific manufacturer's logic board that's been out of production for over a decade. If your opener is original to the house and that old, we may need to order the board or just recommend swapping the whole unit - we'll say which before you pay for a trip charge, not after.