fourth gear
drill rig
drilling rig
switch blade
spare tire
low-background steel
with training wheels
bonus hole
heavy machinery
in the groove
screw back
invasive carp
hard metal
turning gear
cylinder head
all there
security detail
fifth column
the rubber meets the road
upper storey
German wheel
contemplate one's navel
hack it
box and lock
roll up one's sleeves
back wall
each way
wheel-barrow man
dick-measuring contest
once more
rig
boots and all
stick in someone's throat
circle back
front load
next level
top secret
on the ground
work in
motoreductor
bottom edge
in the front row
screw you
iron ring
look back
speak for
double-edged sword
gorgerin
sewing needle
May the Fourth