These kits include steel braided gauge line and block fittings. They can be removed and reinstalled over and over again and they won't break or leak.
LONGACRE 48" STEEL BRAIDED GAUGE LINE LON 52-45040 #4 male x 1/8 IMCA USRA NEW
ALLOYWORKS Turbo Oil Feed Line 36" Steel Braided 4AN AN4 90 Degree Straight Line
ALLOY Turbo Oil Feed Line 36" Steel Braided 4 AN 90 Degree Straight Line New
Longacre Steel Braided Gauge Line 24in 52-45020
36" -4 AN Stainless Steel Braided Oil Pressure Line Kit #1711
Turbo Oil Feed Line 36" Black PTFE Steel Braided -4An -90 x Straight JIC -4 AN