Quad-in-line sockets and staggered (zig-zag) strips are suitable or IC's with staggered double row Dual-in-line type pin patterns. (e.g. NEC, etc…).
Double row staggered strips will also accommodate single-in ine zig-zag memory packages on high density boards. Display sockets
Partially equipped DIL and staggered strips: 4-finger standard Quad-in-line and Display sockets: 6-finger low force