expansion anchor bolt importers, manufacturers,expansion sleeve anchor, sleeve anchor bolts, dyna bolt, concrete sleeve anchors, sleeve bolt, masonry sleeve anchor. 
Anti-skid shark fin anchor, some customers name it brick anchor or sleeve anchor directly. It belongs to inch size, such as 5/16, 3/8 ,1/2 and so on. This type is popular in Southeast Asia, such as Thailand, Vietnam, Myanmar, Cambodia, Sri Lanka, Philippians, Malaysia. You can see this anchor, there are three fins on the sleeve. When you drill a hole, put the anchor into it. Wrenching the nut, the sleeve maybe turning in the hole. But with those three fins, the sleeves expand easily and faster.

Anti-skid Shark Fin Anchor/sleeve bolt（ sample data ）

expansion anchor bolt

No.

Size

Diameter Of Bolt(mm)

Length Of Sleeve(mm)

Length Of Embedment(mm)

Pcs/Carton

FUAO3/16

3/16*40

3/16.

25

27

4000

FUAO1/4

1/4*50

1/4.

35

38

1600

FUAO5/16

5/16*65

5/16.

40

45

800

FUAO3/8

3/8*75

3/8.

45

50

560

FUAO1/2

1/2*95

1/2.

50

55

240

FUAO5/8

5/8*110

5/8.

60

70

120

FUAO3/4

3/4*160

3/4.

80

100

80