Hastings 3.484"/88.50 mm Bore +.030" Over Size, 4-Cylinder Ring Set with 2.00 mm Top Ring, 2.50 mm Second Ring and a First Oil Ring is 4.00 mm.
This Hastings 4-Cylinder Ring Set does not specify Ring Material or Ring Surface Treatment

Application Summary:

Year Make/Model
1975-1980 Toyota Celica
1975-1980 Toyota Corona
1972-1974 Toyota Hi-Lux
Attributes
1st Oil Groove 4.00
2nd Groove 2.50
Alternate Part Number 6886.030
California Proposition 65 No
Engborein 3.484
Engboremetric 88.50
Hazardous Material Code N
Life Cycle Status Code Available to Order
NAFTA Preference Criterion Code B
Notes W/Deep Oil Grv.
SDR Required Flag N
Top Groove 2.00
GTIN 00075538047766